How to open an intercom using NFC. We embed the pass into the phone How to copy an electronic pass to an NFC phone
Today, a very large number of people use contactless passes: at enterprises, in hostels, etc.
Such a pass is also called a “tag”. Some of the most common RFID badges have an operating frequency of 125 kHz. The internal structure consists of a wire coil and a microchip.
Such a pass is of course not large in size, but it is still not so convenient to carry it with you every day. Moreover, if you forget, it’s not very pleasant to return home to get your pass.
I'll show you a way to embed a pass card into cellular telephone.
So, take the pass and soak it in acetone for 1 hour. The main thing is not to overdo it so that the acetone only corrodes the plastic and not the coil with the chip. Take care of ventilation, as acetone is very toxic. Keep the pass in acetone in a container that is closed so that excess vapor does not evaporate. And be sure to ventilate the room.
After an hour, carefully blue the plastic. And Gently separate the separated layers. Take out the reel with the chip.
The little black dot on the microboard is a chip with information.
Next, take a cell phone. Remove the back cover.
Place the reel with the chip on the back wall. Apply nail polish. Waiting for it to dry. Several layers can be applied.
All. Close the phone cover and check.
In principle, there is nothing complicated here. The main thing is not to overdo it with acetone soaking and not to break the wire when transporting from one place to another.
Now you don't need to carry your pass with you, and your phone will always be with you.
Everyone is accustomed to the fact that a smartphone is not the most suitable photographic equipment for shooting something “quick”. As long as you turn on the display, while you unlock the screen, find the “Camera” icon and click on it, there will be nothing to photograph. In fact, in almost all modern smartphones the camera can be turned on instantly - with two presses of the volume down key (Huawei/Honor, LG), the Home key (Samsung) or two turns of the wrist (Motorola, Google Nexus). In some smartphones of other brands, the camera can be activated by double pressing the volume up key or a separate “special key” (for example, the Boom key in Alcatel Idol 4/4S).
Don't neglect tricks for quick launch cameras (source: androidcentral.com)
Neither the password on the lock screen nor the number of background tasks will prevent you from turning on the camera directly from standby mode as quickly as possible. You'll have to get used to weird key combinations or gestures, but it's worth it so you don't get confused every time you need the camera “here and now.”
Sign in to apps using your fingerprint
Unlocking using a fingerprint scanner is a useful feature, although not everyone needs it. Because many people have no need to hide information on their mobile phone under a password, and attackers will find a way to reset/reflash their smartphone after theft.
Using a fingerprint scanner, you can log into applications without a password and pay for purchases online
But even in this case, the fingerprint scanner comes in handy - not in order to set a password for every application, but in order not to enter a password where it is impossible without it. For example, it is much nicer and faster to touch a fingerprint scanner than to type numbers and letters when logging into a bank application or when paying for a game/program/music/video from your phone. However, those who like to “hide, be embarrassed and conceal” information on a mobile phone can put a request to “show your fingers” for every sneeze in Android - proprietary shells from Huawei and ZTE in new models, for example, provide this opportunity.
Don’t be shy to ask your smartphone - it will understand
But the programmers of Google/Yandex and other software writing corporations eat their bread and butter and caviar for good reason, so voice search becomes more and more intelligent. This means that in an unfamiliar city you can easily ask your mobile phone for “the nearest Sberbank ATM” or “Pyaterochka supermarket nearby” and get what you are looking for without going to search bar Google.
Google will always help. Well, or at least he'll try
Google Now's suggestions are still less impressive and are associated only with weather information stuck to the notification bar, but Google remembers your GPS movements, tastes and preferences according to search queries and visited sites, information in your contact list, after which Now becomes smarter over time, automatically reminding you about the birthdays of loved ones, the results of matches of your favorite teams, traffic jams on the way to work and changes in the weather in the morning. This is far from ideal in its ingenuity, but it is already a useful system in many ways. artificial intelligence- Why not use it, since it’s free and not for the needs of the special services?
There is an infrared port - there is a remote control
Once upon a time, you could share ringtones, funny videos and pictures using the infrared port. Those wonderful times are in the past, but the IR port is still installed in new models. In budget Xiaomi Redmi Note 3/Redmi 4, LeEco, mid-range models like Honor 8, ASUS ZenFone 3, Meizu Pro 6, and even in flagships, Huawei Mate 9, HTC One M9 and Samsung Galaxy S6, for example.
For what? For driving household appliances- TVs, VCRs (what other kind of tape recorders in 2017?), air conditioners, microwave ovens, and something else very smart. It’s not a vital function, but turning down the volume when the doorbell rings, and your TV is screaming throughout the entire apartment, and the remote control is lost in an unknown place, will always come in handy.
Controlling equipment from a smartphone is not always necessary, but very often useful
As a rule, applications included with smartphones are designed to control equipment of a similar brand to the smartphone - Xiaomi, LeEco or Samsung, for example. But nothing stops you from going to Google Play and according to the words “IR remote control” or “IrDA” find the one suitable for your household appliances alternative. For gourmets, there are even applications that organize the transfer and reception of files via the infrared port - useful for those who have not yet lost their Siemens CX65 or Sony Ericsson K500i, but the cable to connect to the PC is already irretrievably lost.
Transfer files via Wi-Fi
By the way, about exchanging files between mobile phones - Bluetooth, which we are all used to using for such needs, is also a rather poor and archaic option for exchanging videos and current-sized applications. It is much wiser to use Wi-Fi for this, which is about 5 times faster than Bluetooth of the same degree of relevance.
The problem is that there is no single standard for sending and receiving files from using Wi-Fi does not exist for Android - Google either encourages putting files in cloud storage"Disk" or advocates a hybrid option for data transfer " Android Beam"- when smartphones need to be leaned against each other, they will establish a connection via NFC, and then continue to transfer files using Bluetooth.
Instead of slow Bluetooth, you can transfer files between smartphones using Wi-Fi
Therefore, for our venture we will need aids. For example, ES Explorer, known to every ES enthusiast. One smartphone, two smartphones, each with installed application. Both actors select the “sender” item, one selects “receive”, the second “send”, selecting files - and transferring at a speed of 30-50 Mbit/s (depending on smartphones). All! As a last resort, download this very ES Explorer from the official website and transfer it to a friend via Bluetooth - 10 MB “will not make a difference”, especially since posting a file of several hundred MB in the cloud instead of direct transfer to a smartphone is a much stupider idea, especially after the death of unlimited mobile tariffs in Russia.
We connect flash drives and hard drives to a smartphone/smartphone to a TV
“I’m far from the computer right now, I won’t be able to transfer the file to you” is a nice excuse if you want to relax, but in other cases you should keep in mind such a smartphone function as USB OTG (On-The-Go). This is when a connector, which, as we are used to, is only suitable for recharging a phone or connecting it to a computer, turns out to be able to work with flash drives, hard drives, card readers, keyboards and mice, gaming gamepads and even printers! Through an adapter to a full-size USB connector, of course.
No drivers or other dances with tambourines are required - you connect it, and everything works. Thus, for example, you can immediately send photos from your camera to your family/employer “in the field”, download a pack of movies from the HDD to your smartphone to watch them on a long journey, or vice versa, urgently free up the memory card on your mobile phone so that there is enough space for hours of video recording .
Almost all new smartphones support connection via USB OTG, but we won’t say “for the whole of Odessa,” so make sure that your model is able to handle this type of connection by searching with the words “smartphone_name OTG,” or just buy a cable for 50-300 rubles and experiment !
USB OTG allows you to connect devices to your smartphone like a computer
When connecting smartphones to a TV, things are more complicated. In ancient times, mobile phones were equipped with a separate micro-HDMI output, which worked predictably, and the cable for it was relatively easy to get. Then, when smartphones began to get rid of “extra” connectors, it was replaced by the MHL standard. You connect one side of the cable to micro-USB/USB-C, and the other to HDMI - the smartphone displays the image on the TV and even recharges at the same time (if the connector on the TV also complies with the MHL standard. If it does not, it does not charge). For some time it was popular among smartphone manufacturers - the Sony Xperia Guard stands out among the list of smartphones that support this standard.
But then MHL “deflated” due to licensing proceedings and was replaced by SlimPort - the same principles of connecting devices to TV, only free of patent royalties. Found in most new LG, BlackBerry smartphones, some HTC and ASUS models.
In most cases, Google and company recommend using wireless transmission data to the screen using Miracast. You connect the receiver to the TV, select “screen broadcast” (or something similar) in your smartphone - and with a delay of a second or two, the image begins to arrive on big screen. What-not, but “video recorder”.
Guest mode - when you can’t refuse to let someone use your smartphone
Supporters of radical methods of solving problems will not understand this, but there are situations in life when you need to give a smartphone to your spouse/child for calls, games or something else, but to show off the list of applications, photos, correspondence in instant messengers or bank accounts in the client I don’t really want software. Requesting a fingerprint saves you from prying eyes, but in most smartphones you cannot additionally “cover” sensitive information with a fingerprint. Once you unlock your smartphone, it is at the complete disposal of your child/significant other/Petya, who came to visit your child.
Smartphones have long supported separate Accounts for the owner and strangers
But there is also a compromise option - to create a second smartphone user, just for cases when “I just need to call/play.” We discussed in detail the scheme of these (and many other) “sanctions” for curious mobile phone users in the corresponding article, so today we will not dwell on the instructions. Just know that in any modern mobile phone you can build an “empty” part of the system from which it will not be possible to access your personal data.
NFC - pass, bank card and travel card replenishment from a mobile phone
In addition to all sorts of Bluetooth, Wi-Fi and 4G modules, many modern smartphones support NFC technology. It is with her help that the owners new iPhones and Samsung pay for goods in stores using a smartphone instead of a bank card. Technically, such tricks can be implemented in a huge army of smartphones with NFC support, but only Apple and Samsung bothered with bureaucracy and contracts with banks, so in all other devices the technology will be “marinated” for payment until better times.
But here and now NFC can be used as a short-range connection for short-range communication sessions. For Moscow residents, a smartphone with NFC can already replace a travel card (it is applied to the turnstile instead of transport cards), and can work as a terminal for reading the validity period and the number of remaining trips (you need an application, NFC enabled and touch the card once to the back panel of the smartphone).
IN Lately have been widely used. These devices work as an entry system, allowing only those who have the appropriate key to enter the house. There are times when the key is forgotten at home, lost, or simply fails. Naturally, the question arises of how to get into the house in this case.
There are many ways to open a door using special codes or universal keys. Despite the fact that there are such methods of opening doors, many users are interested in whether it is possible to open the intercom with a telephone.
It turns out that such a possibility really exists and it is realized through special technology, which is called NFC. Below we will discuss the main aspects of this wireless technology and under what conditions you can open an intercom using NFC.
What is NFC technology
NFC is wireless technology, with which you can make contact between two devices. NFC is a continuation of the well-known contactless data exchange technology RFID.
The difference is that RFID tags can be read from a distance of several meters, while NFC tags can only be read from a distance of no more than 10 cm.
When transmitting data using this technology, an initiating device and a passive module are used. The device generates a magnetic field that affects the passive network, transmitting data.
To transmit data using NFC technology, special coding is used, which differs in modulation index, which depends on the data exchange rate. It is important that NFC devices can support two processes in parallel - transmitting and receiving data.
Thanks to this, these types of devices can monitor the magnetic field and detect inconsistencies if the received signal does not meet the required parameters. Such capabilities of NFC technology are actively used for contactless reading important information in various systems.
There are three main ones:
- Emulation of cards and other access elements for contactless identification of an object. This method is actively used to emulate plastic cards on a smartphone, which allows you to make contactless payments using your phone. The data that is read from the phone is not stored in its memory, but in a special chip that is supported by the phone system. To be able to emulate a card, the phone must support NFC technology. In addition to card emulation, this technology allows you to copy the intercom key to an NFC phone and use it to open intercom locks.
- The second area of use of NFC technology involves the use of devices in the form of scanners of corresponding NFC tags, which will allow access to various data. Recently, these types of tags have been intensively used instead of conventional barcodes.
- The third option for using NFC technology is called “Peer-to-Peer”. It provides the ability to exchange data between two devices. For example, you can support wireless data exchange between two devices that have NFC tags.
Is it possible to open an intercom using a smartphone with NFC?
To look for an opportunity to open an intercom using a telephone, it is important to understand whether such a possibility exists technically. Firstly, the installed intercom must provide the ability to use NFC tags to control its operation.
These must be special devices that support the appropriate NFC technology for reading information that allows access to the facility. NFC intercoms can only be opened using the appropriate tags; in this case, it will not be possible to gain access using passwords or special codes.
Secondly, not every phone or smartphone is suitable for working with this type of intercom. The phone must also support NFC technology in order to be able to exchange data with the electronic intercom module. To record tags on your phone, you should use a suitable software which is suitable for operating system installed on your smartphone.
Conclusion
If you want to control access to your home through your mobile device and store the intercom key in your smartphone, you should choose the intercom that supports NFC technology. You should also make sure that the NFC tag with the intercom key code can be recorded on the phone. Then you won’t have to carry the keys to the intercom with you, but will be able to get by with a smartphone that is always at hand.
Video: Opening the entrance door using the phone
While Google and other giants are unsuccessfully fighting over contactless payment systems based on NFC technology(Near Field Communication), other developers are trying to adapt devices that support it for other purposes. Thus, recently NXP Semiconductors and HID Global announced a basic Mobile Access solution for integrating electronic pass cards and NFC phones, reports CyberSecurity.ru .
Contactless cards for employee access to company buildings and parking areas can now be integrated into an NFC phone that stores a digital ID. The NXP security element built into your mobile phone contains credentials that can be read by access control systems and devices. NFC smartphones, which are increasingly used for access control, will provide users and companies with a familiar high level security combined with the convenience of a mobile device.
The jointly developed solution also leverages the benefits of NXP and HID Global sensing technologies in the physical access control infrastructure. The solution supports existing readers, encouraging the migration of access control technologies beyond traditional cards and readers, and enabling mobile access using a digital ID.
NFC technology ensures the exchange of information between devices over short (several centimeters) distances, using existing standards for contactless data transfer. NFC is a development of the ISO/IEC 14443 standard, which describes the parameters of passive (without its own power supply) contactless cards (such cards are used, for example, in subway tickets).
HID Global and NXP helped create the modern market for system solutions physical access based on maps and today together they transfer these solutions to Cell phones as NFC becomes a standard technology.
Theoretically, NFC can completely replace plastic cards. The first attempt to create a full-fledged payment system based on it was the service Google Wallet, however, has not yet achieved much success in integrating traditional “card” and contactless payments. In 2012, American mobile operators Verizon Wireless, AT&T and T-Mobile USA have promised to launch a joint mobile payments platform called Isis. Visa and payment system PayPal.
Of course, NFC uses more technically advanced authorization technology than existing bank-issued cards. However, for the technology to become truly popular, its support must also be on the side of the seller of the product or service, so for now it is unlikely to be able to talk about the widespread popularity of this technology.
NXP Semiconductors is the former semiconductor division of Philips, bought from the Dutch concern in 2006 by a consortium of private investors. The company produces semiconductor components for consumer electronics, automotive electronics, identification systems and mobile devices.
The American company HID Global is considered a world leader in the production of identification devices for security and access control systems.